I send two picture one is all my computer another is the psu I connect all. The light is ok on the motherboard and my memok is on two The fan work on the motherboard maybe my DVI cable because on my another computer I need to plug on VGA and after to connect the DVI cable and it's work I try it witn my new and nothing if my motherboard is broken need to contact asus to send me another one

yeah I press on on my PSU and the green light is on I press on poqwer button all light is on my fan on my graphic card work but nothing on my screen. My DVI cable is connected on the first DVI. But my graphic card has pci-express 2.1 but I know it's work on a ASUS P7P55 LX

Any Memory is A-OK!
MemOK! quickly ensures memory boot compatibility. This remarkable memory rescue tool requires a mere push of a button to patch memory issues. MemOK! determines failsafe settings and dramatically improves your system boot success. Get your system up and running in no time!